Spring and guard lock for eyeglasses.



No. 725,478. PATENTED APR, 14, 1903.

H. S. PETERS.

I SEEING AND GUARD LOOK FOR EYEGLASSES.

APPLICATION FILED NOV. 12, 1902.

N0 MODEL.

m: Norms PETERS co. vncwaumo. WASHINGTON, :1. cv

NITED STATES PATENT. ()FFICE.

HARRY S. PETERS, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TODAVID W. BROBECK', OF ALLEGHENY, PENNSYLVANIA.

SPRING AND GUARD LooK FOVR EYEGLASSESJ SPECIFICATION forming part ofLetters Patent No. 725,478, dated April 14, 1903.

Application filed November 12,1902. Seriall lo.130,988. (NomodeL) To allwhmn it may concern:

Be it known that I, HARRY S. PETERS, a citizen of the United States ofAmerica, residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inSpring and Guard Looks for Eyeglasses, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements. in springand guard locks for eyeglasses; and the invention has for its primaryobject the provision of novel means for the secure locking of the springand of the guards of eyeglasses in such a manner that the same may beheld rigid in their supports and lateral movement thereof prevented.

Briefly described, the invention comprises an interiorly-threaded sleevewhich passes into the post to which the eyeglasses are attached, thesleeve being provided at its one end with a head adapted to engage andbind the ends of the springand guard within the box of the post, theinner end of the sleeve fitting against the shoulder provided thereforin the post and the sleeve being held in position by the screw insertedinto thepost in the opposite direction to that in which the sleeve isinserted. j

Further details of construction entering into the invention will behereinafter more fully described, and specifically pointed out in theclaims, and in describing the invention in detail reference is had tothe accompanying drawings, forming a part of this specification, andwherein like numerals of reference indicate like parts throughout theseveral views, in whichv,

Figure 1 is a plan View showing my'improved'spring and guard lock inposition;

Fig. 2 isa detailperspective view of a modified construction with theparts disassembled. Fig. 3 is acentral longitudinals'ectional view ofthe modified form'withthe parts in posi tion, the spring and guard andeyeglass being removed. Fig. 4 is a detail side elevation of thepreferred form of construction, showing the guard and spring securedtherein, the spring being partly broken away.

Fig. 5 is a central vertical sectional view of the same. Fig. 6 is ahorizontal sectional View thereof. Fig. 7 is a detail. perspective viewof the parts of the preferred formof construction disassembled. r

In accordance with my invention I construct the post 1 withthe usualcurved flanges 2, which are adapted to engage the periphery of theeyeglass 3 at the inner end of the latter, this post also carrying theside straps 4, through which the securing rivet or screw is passed forsecurin g the eyeglass 3 to the post. In my improved form ofconstruction I construct the post with a box 6, the top and bottom ofwhich are open to receive the spring 7 and guard 8, the front wall 9 ofthe box beingbent inwardly at the edges to form the inclined walls 10,adapted to receive the inclined or beveledwalls 11 of the head 12 of thelocking-sleeve 14. The front wall 9 of the box is made of very thinmaterial, so'that it will be pressed inwardly as the lockingsleeve 14 istightened. This locking-sleeve 14 is provided with an interior thread15, which receives the screw-16,.by'means of which the sleeve is lockedin position. This screw is provided with a head 17, which is countersunkin the flange 2, the point 18 of the screw being unthreaded in order tofacilitate the entrance of the screw into the sleeve.

The opening which receives the sleeve 14 does not extend entirelythrough the post and terminates at a point adjacent the one end thereof,thereby forming a shoulder 19, against which the inner end of the sleeve14 abuts. The threaded opening in the sleeve 14 is made throughout thelength of the sleeve, whereby the screw 16 when inserted therein willnot engage the inner end of the opening, but sufficient space will beleft to allow for "any tightening movement of the screw. Inithe'constru'ctionshown in Figs. 2 and 3 the box 6 is opened at thefront as well as top and bottom, and the sleeve 14' is provided withahead 12, which binds the spring 7 and guards in the box. The post 1' inthis construction is provided with an interior annular shoulder 19 to beengaged by the inner end of the sleeve 14', the latter being providedwith an interiorly-threaded recess or screw opening to receive thelocking-screw 16.

ICO

It is understood, of course, that the spring 7 and guard 8 are providedwith registering openings to receive the sleeves 14 and 14. It will beobserved that the head of the sleeve impinging the spring and the guardbetween the same and the inner wall of the box, the spring and guard aresecurely held, while the fastening is an extremely rigid one by reasonof the sleeve passing into the post, presenting a fastening of muchgreater strength and rigidity than is obtained where the screw alone isemployed for passing through the spring and the guard and engaging in awasher, which is a common form of construction for the purpose ofsecuring the spring and guard in position. The head of the sleeve beingseated and the end of the sleeve being seated against the annularshoulder, the sleeve is rigid within the post, and the parts are boundin this rigid position by the screw engaging into the sleeve.

Having fully described myinvention, what I claim as new, and desire tosecure by Letters Patent, is r 1. Aspring and guard lock for eyeglasses,comprising a post carrying straps on one end to receive the eyeglass,and a box on its other end, said post having an opening therethrough, asleeve fitted in saidopening and having a head to lie Within the box,and a screw inserted into the post from the strap end of the latter andengaging in the sleeve, substantially as described.

2. A look for spring and guard of eyeglasses, comprising a post providedwith straps on one end and being formed with a pair of openings ofdifferent diameters extending inwardly from its opposite ends, a box onthe other end of the post, a sleeve fitted in the larger opening in thepost and a locking-screw arranged in the other opening thereof andengaging said sleeve.

3. In a lock for eyeglass spring and guards,

' the combination with a post having an opening therethrough, a box onone end of said post with its front face bent inwardly to form a seat, asleeve having a head to engage in said seat and provided with an.interiorly' threaded recess, and a locking-screw passing through theopposite end of the post and into the threaded recess-in the sleeve tolock the latter in position, substantially as described.

4. In a device of the type set forth, the

combination with the post, of a box secured to one end of the said post,said box having its front face bent inwardly, means seated in the inbentportion of the box for engagement with the eyeglass-spring, and alocking means extending through the said post and engaging the saidlast-named means, substantially as and for the purpose specified.

In testimony whereof I affix my signature in the presence of twowitnesses.

HARRY S. PETERS.

Witnesses:

D. W. BROBEOK, A. M. WILSON.

